Building-block.



PATENTED JAN. 8, 1907.

J. AITKEN. BUILDING BLOCK. APPLICATION FILED MAYIO. 1906.

WITNESSES THE "cums PETERS can, wasmomrmv, n. c.

UNITED STATES AENT QFF I JOHN AITKEN, or NEW YORK, N. Y.

BUILDING-BLOCK- Patented Jan. 8, 1907.

Application filed May 10, 1906. Serial No. 316,109.

To all whom it may concern.-

Be it known that I, J OHN AITKEN, a citizen of the United States, and aresident of the city of New York, borough of the Bronx, in the countyand State of New York, have invented a new and Improved Building-Block,of which the following is a full, clear, and exact description.

The invention relates to concrete for cement blocks; and its object isto provide a new and improved building-block for the construction ofwalls arranged to insure the formation of light and air-tight joints andto reduce the weight to a minimum and still render the block exceedinglystrong and durable and to provide the blockwith air-spaces to preventthe penetration of moisture into a room by way of the wall.

The invention consists of novel features and parts and combinations ofthe same which will be more fully described hereinafter and then pointedout in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings, forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a plan view of the improvement. Fig. 2 is a perspective viewof one end of a buildingblock, and Fig. 3 is a crosssectional elevationof the improvement.

The building-blockmade of concrete, cement, oralike materialconsists,essentially, of spaced parallel vertical facing-walls A and B, providedat their opposite faces with integral V-shaped webs O and 0, connectedwith each other at their side members by arms D, standing approximatelyat right angles to the said arms, as will be readily understood byreference to Fig. 1. The webs C and C alternate and form with the sidearms D vertical air-spaces E and E, adjacent to the inner face of thewall A, and similar air-spaces E and E adjacent to the inner face of theother wall B. The air-spaces E and E are V-shaped, while the air-spacesE and E are approximately triangular, and the air-spaces E and E arelocated in transverse alinement, and in a similar manner the airspaces Eand E are in transverse alinement.

By the arrangement described an exceedingly strong and durablebuilding-block is provided which is exceedingly light and is providedwith double rows of vertical airspaces, so as to prevent the penetrationof moisture through the block when used as a wall of a building.

The ends A and B of the facing-walls A and B break joint with members 0and C forming the web C of adjacent blocks, as plainly indicated inFigs. 1 and 2.that is, the joint of the members C C stands at an angleto the oints formed by the ends A B of adjacent blocks, and the saidjoint of the members C and C is preferably made tapering, as indicatedin Fig. 2.

By reference to Fig. 1 it will be noticed that the member 0 projects adistance beyond the corresponding ends A and B of the walls and thisprojecting member C is adapted to fit into a recess F, formed in theouter face of the facing-wall A, when used as a corner-block, as plainlyindicated in Fig. 1. The corner-block shown in Fig. 1 has its outer endG made solid to prevent moisture from passing into the air-spaces whichwould be formed if the block were not made solid at its outer end.

By arranging-the blocks in the manner described successive tiers orlayers of blocks may break joint with the preceding ones and still theair-spaces can be rendered continuous in a vertical direction throughoutthe entire height of the wall, as one of the airspaces, E, for instance,of a block is located at the middle thereof and a similar one at thejoint between adjacent blocks, and consequently the middle air-space Eof a block in the next tier above can register with the air-space E nextbelow and formed at the joint of two blocks in this lower tier. In asimilar manner the remaining air-spaces E, E and E will register witheach other in successive tiers.

Thus from the foregoing it will be seen that a wall built with blocks asdescribed is rendered intercellular and air-ti ht and at the same timethe weight of each lock is reduced to a minimum and the block isrendered exceedingly strong and durable.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A building-block comprising inner and outerfacing-walls and integral webs connecting the walls with each other,said webs being composed of V-shaped members projecting inwardly fromthe inner and outer facing-walls, the alternate members projecting fromone wall and the intermediate member from the other wall, said membersbeing connected by arms extending between the adjacent faces of theV-shaped members.

2. A building-block, comprising spaced parallel facingwalls, a verticalweb integrally connecting the said facing-walls with each other, the webconsisting of rows of V- shaped webs integrally connected at their endswith the said facing-walls, the said V- shaped webs of the oppositefacing-walls being alternately arranged, and arms inte' grallyconnecting the sides of alternating webs with each other.

3. A building-block, comprising spaced parallel facing-walls, a verticalweb integrally connecting the said facing-walls with each other, the webconsisting of rows of V- .walls, and a web integrally connecting the jlacing-walls With each other, the end of the web extending at an angleto the ends of the facing-walls and having its vertical face tapering.

' 5. .A building-block, comprising spaced parallel facing-walls, avertical web integrally connecting the said facin walls with each other,the web consisting o rows of V- shaped webs integrally connected attheir ends with the said facing-walls, the said V- shaped webs of theopposite facing-walls being alternately arranged, and arms integrallyconnecting the sides of alternating webs with each other, and theseparate members of the end webs of adjacent blocks overlapping eachother at an angle to the joints of the facing-walls of adjacent blocks,and the contacting-surfaces of the members of the end webs of adjacentblocks being tapering.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN AITKEN.

Witnesses:

TnEo. G. I-IosrER, EVERARD B. MARsHALL.

